<istream> <iostream>


typedef basic_iostream<wchar_t> wiostream;
Input/output stream (wide)

This is an instantiation of basic_iostream with the following template parameters:
template parameterdefinitioncomments
charTwchar_tAliased as member char_type
traitschar_traits<wchar_t>Aliased as member traits_type

This class inherits all members from its two parent classes wistream and wostream, thus being able to perform both input and output operations.

The class relies on a single wstreambuf object for both the input and output operations.

Objects of these classes keep a set of internal fields inherited from ios_base and wios:

fieldmember functionsdescription
Formattingformat flagsflags
A set of internal flags that affect how certain input/output operations are interpreted or generated.
See member type fmtflags.
field widthwidthWidth of the next formatted element to insert.
display precisionprecisionDecimal precision for the next floating-point value inserted.
The locale object used by the function for formatted input/output operations affected by localization properties.
fill characterfillCharacter to pad a formatted field up to the field width (width).
Stateerror staterdstate
The current error state of the stream.
Individual values may be obtained by calling good, eof, fail and bad.
See member type iostate.
exception maskexceptionsThe state flags for which a failure exception is thrown.
See member type iostate.
Othercallback stackregister_callbackStack of pointers to functions that are called when certain events occur.
extensible arraysiword
Internal arrays to store objects of type long and void*.
tied streamtiePointer to output stream that is flushed before each i/o operation on this stream.
stream bufferrdbufPointer to the associated wstreambuf object, which is charge of all input/output operations.

Member types

Member types char_type, traits_type, int_type, pos_type and off_type are ambiguous (multiple inheritance).
The class declares the following member types:
member typedefinition

These member types inherited from its base classes (wistream, wostream and ios_base):

Public member functions

Note: This section links to the references for members of its basic template (basic_iostream).

Protected member functions

Public member functions inherited from wistream

Formatted input:

Public member functions inherited from wostream

Formatted input:

Public member functions inherited from wios

Public member functions inherited from ios_base